Lippert Components Trailer Axle (8-12K) - Manual (Page 13)

Rev: 04.18.2014
Page 13
Trailer Axle 8-12K Owners Manual FULL
Lubricate Brakes
Prior to reassembling the brake drum assembly, remember to apply a light film of white grease or an anti-
seize compound on the brake anchor pin, the actuating arm bushing and pin, and the areas on the backing
plate that are in contact with the brake shoes and magnet lever arm. In addition, apply a light film of grease
on the actuating block mounted on the actuating arm.
Clean and Inspect Brakes
In the event the braking system encounters symptoms of improper application or failure, immediate
inspection and service must be implemented. During normal use, servicing the braking system once a year
is considered normal. Increased usage will require service on a regulated schedule based on 3000-6000 mile
increments. As magnets and shoes become worn, they need to be changed to maintain maximum braking
capability.
Be sure, when disassembling brakes for cleaning, to clean the backing plate, magnet arm, magnet and
shoes. Also, make sure that any and all parts removed for cleaning are placed back into the same brake drum
assembly. This is also an excellent time to check for parts that have become loose or worn.
Potential Asbestos Dust Hazard.
Older brake linings have the potential to contain asbestos dust, which has been linked to serious or fatal
illnesses. Certain precautions must be taken when servicing brakes:
1. Avoid creating and/or breathing any brake dust.
2. Do not machine, file, or grind the brake linings.
3. Remove with a damp brush or cloth. Dry brushing or compressed air will cause the dust particles to
become airborne.
Magnets
This electric braking system utilizes an electromagnet to actuate the brake shoes. These high-quality
magnets provide superior force and friction to safely and effectively stop the trailer. These magnets should
be inspected and serviced on the same schedule as the rest of the axle system, at least once a year for
normal use and more often if the trailer is used extensively. Abnormal or uneven wear is a sign that the
magnet needs to be replaced. Check the surface of the magnet with a straight edge to check for uneven
wear. The surface of the magnet should be completely flat.
If the magnet’s coil is exposed in any way, even if normal wear is evident, the magnets should be replaced
immediately. If the electromagnets are replaced, the drum armature surface should also be refaced. If
a magnet is replaced on one side of an axle, it is recommended that the magnet on the opposite brake
assembly also be replaced to ensure even braking capacity.
Figure 6 (Page 14) shows an Electro-Magnet with little or no wear. If there are any pronounced gaps on the
surface of the Electro-Magnet, the magnet should be replaced.